Slapped in the face
Given that there should be nothing at all about the new Mac Pro which makes a video card for it incompatible with the previous Mac Pro, I'd say anger is justified. This perpetual and completely unjustified incompatibility with older systems even when the interface used is the same is quite annoying to users who might like to keep their computer for a couple of years but get a little extra oomph from an upgrade. If the Mac Pro's video isn't supposed to be user upgradeable, then it ought to be built onto the mainboard like in the iMac. Otherwise it's a slap in the face to give an upgrade card that can't be used in a system which is virtually identical except for the processor and RAM speeds.
G5 Power Mac PCIe video cards can't be used in the Gen 1 Mac Pro.
Gen 1 Mac Pro PCIe video cards can't be used in the G5 Power Mac PCIe.
Gen 2 Mac Pro PCIe video cards can't be used in the gen 1 Mac Pro.
Meanwhile I can buy a GeForce 7800 with an AGP connector and it will work in my IBM-compatible PC which was built in the age of the GeForceFX. There's something to be said for backward compatibility. Apple is not known for offering it and they're not getting any better about it.
This 8800 video card -> Apple and Nvidia still working on the software for it - it just came out a few weeks ago!
Given that there should be nothing at all about the new Mac Pro which makes a video card for it incompatible with the previous Mac Pro, I'd say anger is justified. This perpetual and completely unjustified incompatibility with older systems even when the interface used is the same is quite annoying to users who might like to keep their computer for a couple of years but get a little extra oomph from an upgrade. If the Mac Pro's video isn't supposed to be user upgradeable, then it ought to be built onto the mainboard like in the iMac. Otherwise it's a slap in the face to give an upgrade card that can't be used in a system which is virtually identical except for the processor and RAM speeds.
G5 Power Mac PCIe video cards can't be used in the Gen 1 Mac Pro.
Gen 1 Mac Pro PCIe video cards can't be used in the G5 Power Mac PCIe.
Gen 2 Mac Pro PCIe video cards can't be used in the gen 1 Mac Pro.
Meanwhile I can buy a GeForce 7800 with an AGP connector and it will work in my IBM-compatible PC which was built in the age of the GeForceFX. There's something to be said for backward compatibility. Apple is not known for offering it and they're not getting any better about it.